Dumping mechanism



July 1, 1924.; 1,499,682

B. P. MURPHY DUMPING MECHANISM Filed April 21, 1923 2 Sheets-Sheet 1 ,1INVENTOR.

\ B. p/vurm ATTORNEY.

B. P. MURPHY Jul 1, 1924.

DUMPING MECHANISM 1923 2 Sheets-Sheet 2 Filed April 21 2-7... g

INVENTOR.

ATTORNEY.

fatented July 1, 19240 BEBTRAND P. MURPHY, or ".oolvivYBaoox, Noam:DAKOTA.

DUMPING MECH NISM.

Application filed April 21, 1923. Serial 110.633, 687.

To aZZ whom it may concern.

Be it known that I, BERTRAND P. MUR- PHY, a citizen'of the UnitedStates, residing at Donnybrook, in the countv of Ward and State of NorthDakota, have invented certain new and useful Improvements in DumpingMechanisms, of which the following is a specification, reference beinghad to the accompanying drawings.

This invention relates to certain improvements in dumping mechanisms andhas re vehicle is accomplished by elevation of the track timbers o-rlogs from the front of the platform.

An additional object of the invention is to provide a novel and improveddevice of this general character wherein the driving means'will effect apower operation of the mechanism free of the scale platform during aweighing operation.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved dumpingmechanism whereby certain important advantages are attained and thedevice rendered simpler, less expensive, and otherwise more convenientand advantageous'for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the ac companyingdrawings, wherein Figure 1 is a view partly in side elevation and partlyin section illustrating a dumping'mechanism constructed in accordancewith an embodiment of my invention;

Figure 2 is a View similar toF1gure 1 showing certain of the'parts in asecond position;

Figure 3 is a fra entaryyiew partly 1n section and partlyln elevatlonillustrating the brake mechanism associated with the manual operatingmeans; i I

F1gure 4 is a viewinbottom plan of the structureas illustrated in Figure1;? Figure 5 is a view partly ingsectioni and partly in rear elevationof the device as herein disclosed. i

As disclosed in the accompanying drawings, P denotes a scale platformin, itsen; tirety of a general type employed'incoiimounting and generaloperationof the scale platform P forms no part ofmy pres ent 1nventionit. is believed that a detailed nection with grain elevators and asthe-- description and illustration thereof is necessary. I

The platform P is positioned over a pit A and between the flooringfll'The platform comprises the beams 2, said.bealiislv being arranged inpairs at oppositefsides of the platform and positioned betweenthe beams2 of each pair is the track timber or log 3. The log 3' isv pivotallyconnec with th adjacent beams'2 at a point n relatively close proximityto the real." end of the platform P1by a pin l orits equiv'alent,whereby said timber or log Sis capable of swinging movement in avertlcal direction.

Secured to and depending from the opposite end portion of each of thetimbers or logs 3 is an arcuate rack 5 reinforced by the bracket 6.Meshing with each of the racks- 5 is a pinion 7 mountedupon a shaft 8,,said shaft being disposed below and transversely of the platform P andsupported by the arms orb'racke-ts 9 depending from the outer beams 2..The shaft 8 as herein disclosedis provided entirely therealong with thekey way or groove 11 in which is adapted to be engaged a key 12 for eachof the p nlons 7 whereby said pinion. is locked tothe shaft 8.

This mounting of the pinions permits a desired adjustment in order toproperly apply my improved mechanlsm to platforms of varying sizes.

The shaft 8 is held against endwlse movement through the medium of thecollars 1a mounted thereon and contacting wlth the arms or brackets 9,said collars being held 1n fixed position upon the shaft 8 by the setscrews 15 or the like.

Positioned below and extending longitudinally of a side beam 2 andsupported by the arms or brackets 16 depending from said beam is asecond shaft WPFQVlElQd at it? forward end. portion with a clutch member18 herein disclosed as of a friction type. The shaft 17 is held againstendwise movement by the collars 19 contacting with the arms or brackets16, said collars being locked to the shaft 17 by the set screws 20. Theopposite or rear end portion of the shaft 17 has fixed thereto a worm 21meshing with a worm gear 22 fixed to the adjacent end portion of theshaft 8 so that upon requisite rotation of the shaft 17, the shaft 8will be rotated in a direction to raise or elevate the timbers or logs 3to eflect a dumping of a vehicle positioned thereon.

A vertically disposed standard 23 is secured by the bracket 24 or thelike to the side beam 2 of the platform D adjacent to the shaft 17, saidstandard extending above and below the platform and having the shaft 17disposed through the lower portion thereof. Keyed or otherwise securedto the shaft 17 adjacent to the standard 23 is a sprocket wheel 25around which passes a chain 26 which is also disposed over a sprocketwheel 27 arranged adjacent to the upper end portion of the standard 23.This sprocket .27 is fixed to a shaft 28 carried by a bracket 29 securedto theupper end portion of the stand: ard 23 and also fixed to the shaft28 is a hand wheel 30 whereby the shaft 17, when desired, may bemanually driven.

Substantially in alignment with the shaft '17 is a shaft 31 supported bythe arms or brackets 32 depending from a beam 33 of a flooring 1, saidshaft being held against endwise movement by the collars 34 arranged forcontact with the arm or brackets 32 and fixed to said shaft 31 by theset screws 35 or the like. As herein disclosed the shaft 31 has keyed orotherwise fixed thereto a pulley 36 adapted to be coupled with asuitable source of power. The end portion of the shaft- 31 adjacent tothe shaft 17 has keyed thereon for rotation with said shaft but movablelengthwise thereof a clutch mem; ber-37. This clutch member 37 is of afriction type and coacts with the clutch member 18 hereinbefore referredto whereby the shaft 17 if preferred may be power driven. The requisitemovement of the clutch member 37 into and out of engagement with the Iclutch member 18 is herein disclosed as ac complished through the mediumof a lever 38 operatively engaged with said clutch member 37 andpivotally supported by the beam 33 of the flooring 1. The lever 38 alsoextends a desired distance above the flooring 1 so that it may bereadily and conveniently manipulated. When the clutch member 37 is freefrom the clutch member 18 the shaft 31 and the parts carried thereby areentirely separated from the platform P and particuiarly during aweighing operation.

Fixed to the shaft 28 and preferably between the arms of the bracket 29is a band wheel 39 with which is associated the brake band 1-0, one endportion of the band being connected as at 41 to the bracket 29 andhaving its opposite end portion secured to a brake handle -12 pivotallyattached to the bracket 29. By proper manipulation of the handle 42 therotation of the shaft 17 may be effectively controlled and especiallyduring the lowering movement of the track timbers or logs 3.

The standard 23 is further'braced by the rods 13 interposed between thestandard 23 at a point above the adjacent beam 2.

From the foregoing description it is though to be obvious that a dumpingmechanism constructed in accordance with my invention is particularlywell adapted for use by reason of the convenience and facility withwhich it may be assembled and operated, and it will also be obvious thatmy invention is susceptible of some change and modification withoutdeparting from the principles andspirit thereof and for this reason I donot wish to be understood as limiting myself to the precise arrangementand formation of the several parts herein shown in carrying out myinvention in practice except as hereinafter claimed.

I claim The combination with a scale platform, track timbers pivotallysupported thereby, means carried by the platform for moving said tracktimbers about their pivots, manually operated means carried bysaidplatform for operating said first named means, and power drivenmeans supported independently of the platform for operating said firstnamed means.

In testimony whereof I hereunto afliX my signature.

' BERTRAND P. MURPHY.

